I don't mean to offend in any way, but I practically work in IT (or very close to it) and in my opinion, my parents and grandma for that matter, are all very much computer literate. No, in my opinion computer literate does not mean what you describe above, but much less. My 70 yo dad or grandma who is almost in her 80s both know how to do their online banking, understand not the just basics of Windows but a bit more, know how to write and save files. My grandma does not know what Excel is, but in my opinion, I do consider her to be computer literate. I have had to attend customer complaints from very senior citizens who don't know how to write on a keyboard or do not know what a browser is (yet they somehow landed on the website I'm responsible for)... That is close to computer illiterate.
I have a vague idea on how to write queries in Access, the other things you mention I know how to do, but those skills are not needed by someone who just uses a computer in their daily life. For a teacher, I'd think, most important would be the proficient use of a web browser, ability to handle online and offline documents and basic (very basic) Excel skills... Anyone with a different opinion or more knowledge on this, feel free to jump in...